I am worried that suddenly singapore will have a lot of 'maid hunters' ..
Anyway, the other place that is quite popular with maids is the Botanic garden, especially with the closing of the Gulong park, and a walk along the rear of orchard tower area, and so can generate good fishing ground !!!
Indonesian maids are well known to hang around at parks.. and so are filipinas .. do a stroll on sunday at ECP
just a small warning. Just because you see a group of girls, and they seem filipina dont mean they are maid, and again, dont assume all maid are here to fkk by the guys. More than enough maids are religious enough to be married to the church and will throw massive tantrums if they get a hint of your motive .. and talking about churches - that is also a nice place to make friends .. (apologies to the church .. )
There are lot of other professional filipinas in Singapore, who will not hesitate to call the police, or create a scene, if you smile and try to get their number.
Anyway, no pain, no gain !!!! Good luck if you get successul, and bad luck if you got a bit of mud on your face.